Dewatering mechanism for paper-machine drums



J. c. GLENN. DEWATERING MECHANISM FOR PAPER MACHINE DRUMS.

I I APPLICATION FILED JAN-$1920 I 1,374,198. Patented Apr. 12, 1921.

4-4 in Fig. 3.

JOHN C. GLENN, 0F ERIE, PENSYIJVANIA.

DEWATERING MECHANISM FOR PAPER-MACHIN E DRUMS.

Application filed January 5, 1920. Serial No.

To all whom it may concern c it known that I, JoHN C. GLENN, a citizen of the United States, residing at Erie, in the county of Erie and State of ennsylvania, have invented certain new and useful Improvements in Dewatering echanism for Paper-Machine Drums; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, forming part of this specification.

y invention relates to paper making machines and the object thereof is to provide means and mechanism whereby the water of condensation can be ejected from the drier drums of paper machines without undue loss of steam.

The features of my invention are hereinafter fully set forth and pointed out and are illustrated in the accompanyingdrawings in which:

' Figure 1, is a side view partially in section, of a drier drum with my improved mechanism thereon.

ig. 2, is an end view thereof with one of the journals of said drum in vertical section on the line 2-2 in Fig.1.

Fig. 3, is a longitudinal vertical section of a drum journal with my improved mechanism thereon.

ig. 4, is a transverse section on the line In these drawings A indicates a drier drum of ordinary construction, being rovided with supporting journals A, A; the heads A of the drum being provided with cylindrical shoulders A in the usual manner. A indicates the usual through into the drum A. I

In carrying out my invention I drill 1ongitudinal ducts B into one of the journals A, which terminate at the periphery of the cylindrical shoulder A on opposite sides of the journal A, and within the drum A I place buckets C C at opposite sides of said drum, which buckets are connected by means of tubes D D with the ducts B B in the journal A.

Secured on the end of the journal A by means of bolts 6, is a cap E which is pro- Specification of Letters Patent.

, which K, and the Patented Apr. 12, 1921.

vided with holes B, which coincide with the ducts B and with a screw threaded central opening E in which is secured a pipe F which is concentric with the opening A 1n the journal A and extends forwardly into the drum A, as shown in Figs. 1 and 3.

Secured to the cap E by means of an internally screw threaded collar E thereon, is a stem G of a ball and socket jointpart G of the ball thereof being on said stem, and th ball beingrotatable upon the journal G of said stem for the purpose hereinafter set forth. The stem G and journal G are p opening with the outer end of the tube F. The stem G is also provided with ducts g g which communicate with the ducts B B in the journal A and cap E,- and the portion of the ball H is provided with a segmental slot H (see Fig. 4) which communicates with one of the ducts g in the stem G. 7

Upon the ball portion H I place a hous ing J which is provided with a duct J communicates with the central openlng G in the stem Gy and with a duct J which communicates with the segmental slot H in the ball portion H.

The housing J being secured in place by means of the housing member K which fits over part vof the ball portion H and the ball portion G, and is connected with the housing portion J by means of bolts K which are screwed into openings in the flange J 3 in the housing J and pass through openings in the flange on the housing member K, and are provided with springs K by means of which the housing member housing member J are drawn toward each other so as to tightly compress the ball G and H between them.

The ball member H is provided with a hand lever L by means of which the ball member H can be oscillated as desired upon the journal Gr of the stem Gr for the purpose hereinafter set forth. I

In operation the drier drums of a paper making machine are rotated in the direction of the arrow in Fig. 2, and steam is introduced thereinto through the duct J in the ousing J, and thence through the duct G and tube F into the drum, and as the drum rotates the ducts g g in the stem G successively coincide with the segmental slot H in the ball member H, which communicates h coincides e remaining portion H of said the drum changes tion with'the exhaust duct J 2 in the housing J,

and during the period of such coincidence steam or water of condensation can flow outwardly through the duct B in the jour nal A, and the duct 9 in the stem G which coincides with the segmental duct H and the duct J v In Fig. 2 by means of broken lines I show the substantial position of the body of water within the .drum during the rotation of the drum, and it is well knownthat the position of this body of water within according to the speed drum-2i. e. as the speed higher up Within the of rotation of the increases the water is drum than when the in order not to waste steam when the bucket C is not in the water the ball portion H acts as a valve to prevent the escape of steam from one of the ducts g while its connected bucket C is not in the water; and as the body of water M within the drum changes its osition, it is necessary that the timing of t c coincidence of the duct 9 with the segmental slot H, or with the exhaust duct J 2 should be advanced or re tarded and for this purpose I have provided the ballportion' H and made it rotatable with relation to the ball portion G so that as the drier drum is caused to rotate at the greater speed, the ball portion H having the segmental slot H therein, is manually rotated to substantially the same radial ied by thebody of water uct lg will coincide with the substantially the same instant the buckets C within the drum A enters the body of water M therein, and the slot H should be of such width that the duct y will cease to' coincide with the slot H at substantially the same instant thatv the bucket passes out of the body of water M- so that there will be substantially no escape of steam or exhaust out of the duct J 2 when so that the slot H at that one of the bucket C is not in the position within the drum A where water will accumulate.

N indicates a pin or bolt adapted to pass.

through the openings N in the flanges J 8 and and through an opening in the handle I to maintain the ballportion .H in the desired stationary position, while the stem G continues to rotate in unison with the journal words, the bolt N maintains the ball por- H in the desired adjustable osition with relation to the housin J, w ile the stem G and ball portion "continue to rotate. 7

It is apparent therefore, that by means of my improved mechanism the exhaust ducts from the interior of the drier drum will only be open to the atmosphere'when the buckets C within the drum are at such a position that the water will be forced outby Letters speed is slow; hence,

bring theslot H in osition oc'cu- I A of the drum- A. In otherwardly from the 'drumthrough the exhaust duct J Having thus fully described my invention so that the same can be utilized by others, what I claim as new andv desire to secure Patent of the United States 1. In a paper making machine a drier drum, axial journals to support ;the same, means to admit steam into said drum, longitudin'al ducts in one of said journals, a tubular connection from each of said ducts to points adj acent to the inner periphery of said drum, and mechanism secured on the end of said journal adapted to-open each of said longitudinal ducts alternately to the atmosphere at each. revolution of said drum, substantially asset forth.

2.. In a paper making machine a drier drum, axial journals to support the .same, means to admit steam to said drum, longitudinal ducts in one of said journals, tubular connections from said ducts leading to' the inner periphery of said drum and revoluble with said drum, a stem secured on the end of said journal having longitudinal ducts therein which coincide with longitudinal ducts in said journal, and a housing inclosing the end of said stem adapted to open each of said longitudinal ducts; alternately to the atmosphere at each revolution of the drum, substantially as set forth.

3-. In a drier drum for paper making machines, means within and revoluble with the' connections theredrum to the drum. during the rotation thereof, substantially as set forth.

4. In a drier drum for paper making machines comprlsmg a drum and axial journals thereon, longitudinal ducts in one of said journals, radial tubular connections revoluble with said drum, longitudinal ducts to points adjacent to the inner periphery thereof, a central longitudinal opening through said axial journal, a stem secured on the outer end of said journal and revoluble therewith having-longitudinal ducts therethrough anda vcentral longitudinal opening therethrou h which comc de w th the ducts and centra opening in said journal, and a housing inclosing the outer end of said stem having-a steam inlet passage coinciding with the central longitudlnal opening in said stem,-and' a passage which 18 adapted to open each of said longitudinal ducts in said stem to the atmosphere at each 'revolutionof said drum andstem,

' substantially as set forth.

leading from said 5. In a drier drum for paper making maneetions, a-ball shaped journal on said stem, chines, axial supporting journals, a stem sea housing inclosing said ball shaped journal 15 cured on the end of one or both of and having a steam inlet passage coinciding said journals, a central longitudinal openwith said central longitudinal opening, and ing through said stem and journal, a water and steam outlet passage adapted to through which steam may be admitted to coincide alternately with each of said longisaid drum, longitudinal ducts in said stem tudinal ducts at each revolution of said 20 and journal eccentric to said central opendrum, when said dipper means is immersed ing, tubular connections leading from said in water in said drum substantially as set ducts to the interior of said drum, dipper forth. means within said drum and secured adj a In testimony whereof I aflix my signature. cent to the inner cylindrical Wall thereof and communicating with said tubular con- JOHN C. GLENN. 

